381646134 has 32 divisors (see below), whose sum is σ = 862013280. Its totient is φ = 125128800.

The previous prime is 381646121. The next prime is 381646189. The reversal of 381646134 is 431646183.

It is a happy number.

381646134 is a `hidden beast` number, since 3 + 8 + 1 + 646 + 1 + 3 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54637 + ... + 61224.

It is an arithmetic number, because the mean of its divisors is an integer number (26937915).

Almost surely, 2^381646134 is an apocalyptic number.

381646134 is an abundant number, since it is smaller than the sum of its proper divisors (480367146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381646134 is a wasteful number, since it uses less digits than its factorization.

381646134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115933 (or 115927 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 381646134 is about 19535.7655084207. The cubic root of 381646134 is about 725.3600329904.

The spelling of 381646134 in words is "three hundred eighty-one million, six hundred forty-six thousand, one hundred thirty-four".